Warren Buffett’s conglomerate Berkshire Hathaway said it will launch a share buyback program, an extremely rare move from Buffett that comes after months of investor complaints that the stock was undervalued.

The London Metal Exchange has thrown open its doors to a potential $1.5 billion takeover and is considering a sale that might end the independence its chief executive previously said was not negotiable.

At least seven firms, mainly private equity, have shown interest in data and analytics company CoreLogic, attracted by its growth businesses and relatively cheap valuations. Might it be sold whole or in pieces?

AT&T, Deutsche Telekom and T-Mobile USA have amassed an army of former senior government antitrust officials to try to save their $39 billion deal to combine wireless businesses.

“While Hewlett-Packard directors deliberate over the potential dismissal of the tech giant’s chief executive, Léo Apotheker, the board is expected to also consider what will become of his two biggest initiatives: a big acquisition and a potential spinoff of its PC business,” the NYT reports.

“Google’s critics get a chance to vent today, using the invective of antitrust. A hearing of the Senate antitrust subcommittee is also something of a swan song for its retiring chairman, the estimable Herb Kohl,” the WSJ said in an opinion piece.

Rising buyouts between China and Japan, abundant leveraged debt in the region and the depth of China’s markets mean Asia-Pacific private equity will continue to outperform the Western model, leading Asia fund managers said.

Groupon seeks to go public in October or November, people familiar with the matter told the New York Times, a week after the daily deals website put its IPO on hold for a few weeks as it waited to ride out global market turmoil.

Rather than wasting time and money with a costly takeover battle with Ralcorp and its strong takeover defenses, ConAgra may soon look at other deals in the private-label business, a source familiar with the situation said.

Moody’s cut the credit ratings of two French banks because of their exposure to Greece’s debt, highlighting growing risks to Europe’s financial sector from a deepening euro zone sovereign debt crisis. In an opinion piece, the WSJ reports the French financial system maintains too close a relationship to the state.

Google raised its offer for Motorola by 33 percent to $12.5 billion over two weeks of negotiations between the two companies, according to a regulatory filing.